I don't think people are talking enough about this scene in Spider-Man: Brand New Day
Technically, Peter Parker dies. That gunshot wasn't something he should've survived.
It wasn't Spider-Man's healing that saved him. It was Jean Grey.
She stayed outside the hospital for hours, using her powers to keep Peter alive. Every heartbeat. Every pulse. Every single breath he took before waking up... Jean was breathing for him.
Frank even points out that Peter shouldn't have survived that wound.